A girl who you are trying to pick up in a bar who is just fuckable, specifically a 5.1 on a scale of 1-10. She spends most of the night drunkenly singing every song that is played on the jukebox very loudly directly into your ear.(Named for Dolby 5.1 surround sound)

A:"Where's Andrew?"
B:"He's been over at the other end of the bar all night with that dolby singing "Barbie Girl" into his ear."